
var Util = {
  formatNumber:function(n) {
  n = n.toString()
  return n[1] ? n : '0' + n
},
guid: function() {
  return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
      var r = Math.random()*16|0, v = c == 'x' ? r : (r&0x3|0x8);
      return v.toString(16);
    });
  }
};
module.exports = Util;
